Speed control of brushless dc motor using microcontroller. Programming the pic16f877a microcontroller for speed. It consists of the inertia of the motor and a load j. Microcontroller based speed control of a dc motor using pwm. The aim of development of this project is towards providing efficient and simple method for control speed of dc motor using pulse width modulation technique. This is a simple projecttutorial on how to control dc motor speed using 805189c51,89c52 microcontroller. Apr 27, 2019 here is a simple project on how to control fan or dc motor speed with microchip pic16f877 microcontroller.
You can generate it by using timers of 805189c51,89c52 microcontroller. But when it comes to controlling the speed using microcontrollers. This work reports the development of a microcontroller based control system to change the speed of a dc motor. Bldc motor has various application used in industries like in drilling, lathes, spinning, electric bikes etc. The theoretical background model to show the direct relationship of voltage on the speed of dc drives in order to control the speed of a dc machine is discussed and presented.
Atmega16 is a lowpower cmos 8bit microcontroller based on the avr risc architecture. Pdf microcontroller based dc motor speed control using. This article shows how to interface a dc motor to an 8051 microcontroller. Speed control of dc motor using pulsewidth modulation. The duty cycle should be controlled by using a potentiometer so that we can control the speed of the motor. May 23, 2016 thus we can count number of such applications where there is a need to change direction andor speed of dc motor. This paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor. Pulse width modulation pwm technique was used to control the amount of power delivered to the load the dc motor without dissipating any wasted power.
The maximum current that can be sourced or sunk from a 8051 microcontroller is 15 ma at 5v. Pdf this paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor. The following topic shows how to control speed and direct of a dc motor using pic16f877a and hbridge circuit. The second subprocess in the motor is a mechanical one. Here is a simple project on how to control fan or dc motor speed uisng pic 16f877 microcontroller. The pwm wave for speed control is generated using atmel at89c52 microcontroller. Thus, this is all about the design and construction of fan speed control system to control the room temperature using pic16f877a microcontroller.
Interfacing dc motor with 8051 using l293d at89c51 keil c. Mar 19, 2015 dc motor speed control using 8051 microcontroller. When the transistor is on, the motor starts to increase speed and off then motor loses speed. Synchronisation, speed and direction control of dc motor 945 2.
Pdf microcontroller based speed control of a dc motor using pwm technique warse the world academy of research in science and engineering academia. Rohit naik 07241a0247 in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering gokaraju rangaraju. Sep 22, 2018 by interfacing dc motor to the microcontroller, we can do many things like controlling the direction of the motor, controlling the speed of the motor. Speed control of dc motor using microcontroller semantic. Four quadrant operation of dc motor remotely controlled by android application system. At the heart of the dc motor controller is microcontroller at89c51. Direction control of a dc motor using pic microcontroller. Microcontrollerbased dc motor controller full electronics.
The modulation of pulse width is obtained using pulse width generator in atmega16. Dc motor is the most used motor in robotics and electronics projects. Synchronisation, speed and direction control of dc motor. The main advantage in using a dc motor is that the speed torque relationship can be varied to almost any useful form. The speed of dc motor is directly proportional to the voltage applied across. This is a simple pwm based dc motor speed control system circuit using atmega8 controller. For example, consider the dc motor whose speed or direction of rotation of dc motor can be controlled using programming techniques which can be achieved by interfacing with 8051 microcontroller. The controller presented here uses the pulsewidth modulation pwm technique. If you have worked with any variant of the 8051 microcontroller, you might remember that 8051 doesnt have a dedicated pwm circuitry to enable pwm mode.
This is a method to control the output voltage with the of constant frequency switching and by adjusting on duration of switching and in other words by changing duty cycle of switching. Dc motor speed control using 8051 microcontroller youtube. Interfacing dc motor to 8051 microcontroller using at89s51. Doc speed control of a dc motor using micro controller 8051 1.
Pwm based dc motor speed control using microcontroller circuit principle the heart of this project is the 8051 microcontroller. The aim of this paper is to control the speed of dc motor. Pdf microcontroller based dc motor speed control using pwm. When the speed is varied from 1 to 9, the speed increases, with the value 9 set as the maximum speed of the motor. Dc motor control with pic16f877a and l293d circuit. Brushless dc motor drive integrated circuits and reference. Speed control of a dc motor using microcontroller 8051 a project report submitted by s. This paper is mainly concerned on dc motor speed control system by using microcontroller pic 16f877a. Jan 20, 2016 dc motor speed control using pwm technique. A pwm dc motor controller technology is used to control the speed. So, lets get started with dc motor speed control using arduino uno. The easiest way to control a relatively low current 1224v motor is by using a generic analog dc motor speed controller.
The four quadrant operation of dc motor remotely controlled by android application system is a very sustainable system for controlling the dc motor. How to build a simple pwm dc motor speed controller using atmega8. Validation of dc motor speed control using pic 16f628a microcontroller is presented in this paper. Doc speed control of a dc motor using micro controller 8051. Four quadrant dc motor speed control with microcontroller. Jul 20, 2015 introduction the aim of developing this project is to control the speed of dc motor. Dc motor speed control using pic microcontroller pwm method.
Pdf microcontroller performance for dc motor speed control system. The speed is related to the variation of the duty cycle of the pwm signal, the dc motor reaches its maximum speed. The design showed good velocity tracking performance under both load and noload conditions. There are numerous ways to control the speed of motoror fan. The motion of a dc motor is controlled using a dc drive. To achieve the speed control an electronic technique called pulse width modulation is used which generates high and low pulses. Speed synchronization of multiple motors in industries. Stepper motor control using microcontroller at89c51. Keywords dc motor, speed control, microcontroller, atmega8. The fuzzy logic controller flc was also adopted in 16 for the control of the speed of brushless dc motors.
Soc with integrated sensorless trapezoidal or vector control ease use and reduce timetomarket. In this project the speed of the dc motor is controlled using a potentiometer connected to the pic16f887 microcontroller. This type of controller has a potentiometer to vary the speed of the motor. Our integrated circuits and reference designs help you create compact, fully protected and efficient dc input speed controlled bldc drives with smooth torque and accurate speed control. The pulse width output from the microcontroller would be automatically adjusted to maintain the dc power to the motor such that the entered speed percentage matches the running rpm. Programming the pic16f877a microcontroller for speed control. When 0 is sent over the serial monitor, the motor runs at minimum speed that is zero. Speed and direction control of dc motor using avr microcontroller. Dc motor speed control using 8051 microcontroller mahesh madivali. Four quadrant operation of dc motor remotely controlled by.
Jan 24, 2019 by interfacing dc motor to the microcontroller, we can do many things like controlling the direction of the motor, controlling the speed of the motor. Pdf speed control of dc motor using microcontroller. Pwm dc motor speed controller circuit using pic16f877a. The speed of dc motor is directly proportional to the voltage applied across its terminals. Pdf microcontroller based speed control of a dc motor using. In the circuit there are 3 push buttons, 2 for selecting the direction and the other one for stopping the motor.
Dc motor speed control using arduino the engineering projects. These controllers can be found with a wide range of power ratings. Programming the pic16f877a microcontroller for speed control of. Vdd and vss of the pic microcontroller is not shown in the circuit diagram. Armature voltage is varied by pulse width modulation pwm of input dc voltage. Automation results into better quality, increased production an reduced costs. Pdf speed control of dc motor by using pwm technique. It is a closedloop real time control system, where optical encoder built in this project is coupled to the motor shaft to provide the feedback speed signal to controller. Dc motor speed control using arduino and potentiometer. This paper presents speed control of dc motor using an 8051 series microcontroller. The speed control of the dc motors is very essential.
Motor speed controller dc motor speed controllers are very useful for controlling the motion of robotic and industrial automation systems. For controlling the speed of dc motor we have various methods, but in this project we are controlling dc motor speed using pwm. Furthermore, the fan speed will boost automatically if the room temperature is raised. If you have worked with any variant of the 8051 microcontroller. Microcontroller based 4 quadrant dc motor speed control.
Speed control of dc motor using pic microcontroller the. The components and assembly of this microcontroller. Interfacing dc motor with pic microcontroller using l293d. Todays industries are increasingly demanding process automation in all sectors. Pwm based automatic closed loop speed control of dc motor. This paper uses the above principle to control the speed of the motor.
Stepper motor control using microcontroller at89c51 various techniques can be used to control the speed of an ac or dc motor, such as using the phaselockedloop principles, digital inputs, or analog inputs. Some of the dc drives are just a rectifier with a series resistor that converts standard ac supply into dc and gives it to the motor. With the help of pwm it is possible to control the average power delivered to a load and by thus we can easily regulate the speed of the dc motor. Microcontroller based speed control of dc geared motor through. The circuit of a simple speed controller for a mini dc motor, such as that used in tape recorders and toys, is shown in fig. Controlling the speed of dc motor can be done by different ways like using a potentiometer and also by a controlled current to the armature. The best method for speed control of dc motor is the use of pulse width modulation technique. We can drive two dc motors with one l293d, in this example we are using only the first pair of drivers to drive one dc motor.
Circuit description of microcontroller based dc motor controller. Obviously with low pulse width, speed of motor gets reduced. When it comes to speed, weight, size, cost, dc motors are always preferred over stepper motor. Oct 29, 2018 here we will use a technique called pwm pulse width modulation to control the speed of dc motor.
Here is a simple project on how to control fan or dc motor speed with microchip pic16f877 microcontroller. A dc brushless motor uses a permanent magnet external rotor, three phase of driving coils, one or more hall effect devices are used to sense the position of rotor, and the associated drive electronics. The coils are activated, one phase after the other, by the drive. Since the maximum current that can be sink from 8051 microcontroller is 15 ma at 5v. We have to create a pwm signal with varying duty cycle from 0% to 100% with a frequency of 50hz. Aug 06, 2014 doc speed control of a dc motor using micro controller 8051 1. Interfacing dc motor to 8051 forms an essential part in designing embedded robotic projects. Large motors class controlling motor speed instructables. Finally to set the speed of the bldc motor we also use a potentiometer connected to a0 pin of the arduino arduino program for bldc motor. Then the pwm pulse width modulation technique is most effective. The speed of the motor as well as the operation of motor in four quadrants such as forward brake, reverse brake, clockwise, anticlockwise rotation can be controlled using 8051 microcontroller. Bakibillah and others published microcontroller based closed loop speed control of dc motor using pwm technique find, read and cite all the research you need on.
Development of a microcontroller based dc motor speed. Dc motor when interfaced with a microcontroller, can control the speed of motor, can control the direction of rotation, can also do encoding of the rotation made by dc motor i. Interfacing dc motor with 8051 microcontroller using l293d. The direction of dc motor can be controlled by just reversing the polarity of given supply. Firstly an 8051 with the required software to control the motor and secondly a suitable driver circuit. A well designed 8051 dc motor system has essentially two parts. It is not good to connect dc motor directly to the microcontroller. This paper uses the above principle to control the speed of the motor by varying the duty cycle of the pulse applied to it. Arockia edwin xavier thiagarajar college of engineering,electrical and electronic engineering madurai,tamil nadu email. Interfacing dc motor with 8051 using l293d at89c51. In some of the electronics projects you may want to control a dc motor with 8051 microcontroller. Aug 26, 2018 we can change the speed of motor from 0 to 9. Motor driver ic used for interfacing dc motor with 8051. Jun 16, 2015 the block diagram of four quadrant dc motor speed control with 8051 microcontroller project is shown in the above figure.
This project is mainly concerned on dc motor speed control system by using microcontroller pic 16f72. The four quadrant dc motor speed control with 8051 microcontroller. This article describes you how to control the dc motor using at89c51 controller or any variant of 8051 microcontroller. Speed control of dc motor using pic microcontroller. The purpose of a motor speed controller is to take a signal representing the required speed, and to drive a motor at that speed.
Dc motor control with pic microcontroller mikroc projects. Automatic fan speed control using pic16f877a microcontroller. A microcontroller is a single chip that contains the processor the cpu, nonvolatile memory for the program rom or flash, volatile memory for input and output ram, a clock and an io control. Speed control of dc motor using microcontroller free download as powerpoint presentation.
By interfacing dc motor to the microcontroller, we can do many things like controlling the direction of the motor, controlling the speed of the motor. In this tutorial we will learn that how to make an algorithm for dc motor speed control using arduino uno. To control dc motor speed with pic microcontroller, we should know about these two features. That means motor will run at a fixed speed instead of varying with amount of load. Jul 09, 2016 the best method for speed control of dc motor is the use of pulse width modulation technique. This ppt shows that the process to control the speed of a dc motor using microcontroller. The fuzzy logic controller flc was also adopted in 16 for the control of the speed of brushless dc. Pdf microcontroller based speed control of a dc motor. The pwm wave for speed control is generated using atmel at89c52 microcontroller to control the speed of the dc motor, you need a variablevoltage dc. Circuit of microcontroller based dc motor speed controller d c motor speed controllers are very useful for control ling the motion of robotic and industrial automation systems. There are numerous ways to control the speed of motor or fan. Time settings are possible for forward and reverse running of the motor. Pwm based dc motor speed control using microcontroller. Microcontrollerbased dc motor speed controller electric.
Their are two ways to generate pulse width modulation signal using 805189c51,89c52 microcontrollers. Pdf microcontroller based closed loop speed control of. Microcontroller based speed control of a dc motor using. Science speed control of dc motor using microcontroller. What is brushless dc motor bldc and how to control bldc. Dc motor or fan speed is controlled using pwmpulse width modulation technique. Pdf microcontroller based closed loop speed control of dc. By executing powerful instructions in a single clock cycle, the. Dc motor interfacing with 8051 microcontroller using l293d. So, in this article let us discuss about interfacing dc motor with 8051 microcontroller. We can achieve speed control of dc motor using mechanical or electrical techniques but they require large size hardware to implement but a microcontroller based system provides an easy way to control the speed of dc motor. It is a closedloop control system, where optical encoder built in this project is coupled to the motor shaft to provide the feedback speed signal to controller. Circuit of microcontrollerbased dc motor speed controller d c motor speed controllers are very useful for controlling the motion of robotic and industrial automation systems.
At89c51 based dc motor controller electronics for you. The above operation is carried out by using one opto isolator and a mosfet for driving the bldc motor duly interfaced from the microcontroller. In this project we will be able to control the speed of dc motor with potentiometer and we can adjust the speed. Apr 10, 2017 it will be helpful to vary the speed of the dc motor in either clockwise or in anti clockwise direction. The microcontroller block is interfaced with dc motor using motor driver ic, the power supply block provides power supply to the project kit, and switch array. Hence, if voltage across motor terminal is varied, then speed can also be varied. At the heart of the dc motor controller is microcontroller. Speed control in dc motor drive systems are commonly operated with the closed loop control8, whereby the feedback speed signal is generated through. Speed control in dc motor drive systems are commonly operated with the closedloop control8, whereby the feedback speed signal is generated through. Thus by varying the pulsewidth, we can vary the average voltage across a dc motor and hence its speed. Development of a microcontroller based dc motor speed control. Speed control of dc motor using microcontroller arduino.
Automatic speed controller of a dc motor using arduino, for. The variable speed drives, which can control the speed of a. Dc drive changes the speed and direction of motion of the motor. Dc motor speed and direction control with pic16f877a and hbridge. Simple analogue bidirectional dc motor speed control. When the width of pulse is high, the motor will rotate with full speed. Controlling dc motor using microcontroller pic16f72 with pwm. Mohammed designed and implemented motor bidirectional dc control circuit using pulse width modulation pwm based on an operational amplifier model. Dc motor control with pic16f877a and l293d proteus. Apart from these techniques, pulse width modulation is the effective way to implement motor speed control. The objective of developing this project is to control the speed of dc motor. In many projects of embedded systems, we may need to control a dc motor using controller. Dc motor speed control using pwm method circuit explanation.
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